Window-lock.



N0. 76Z,648. PATENTED JUNE 14, 1904. J. T. MYERS.

WINDOW LOOK.

APPLICATION FILED JULY 12, 1902.

N0 MODEL.

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UNITED STATES Patented June 14, 1904.

JOHN T. MYERS, OF CULMERVILLE, PENNSYLVANIA.

WINDOW-LOCK.

SPECIFICATION formingpart of Letters Patent No. 762,648, dated June 14, 1904.

Application filed J 11 3 1% 1902.

To all whom it may concern:

Be it known that I, J oHN'T. MYERS, a citizen of the United States of America, residing at Culmerville, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Window- Locks, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to certain new and useful improvements in window-locks, and has for its object to provide a window-lock which may be attached to the sash of the window, said window-look being provided with means whereby the window may be raised to any desired height and locked.

Another object of my window-lock is to provide a casing which may be attached to the window-sash, said casing containing means whereby the frame of the window is frictionally engaged and means whereby when the window is closed the same may be locked so it cannot be opened from the exterior of the room.

A still further object of my invention is to provide a window-lock that will be extremely simple in construction, strong, durable, comparatively inexpensive to manufacture, and highly efficient in its use.

With the above and other objects in view the invention consists in the novel construction, combination, and arrangement of parts to be hereinafter more fully described, and specifically pointed out in the claims.

In describing the invention in detail reference is had to the accompanying drawings, forming a part of this specification, and wherein like numerals of reference indicate like parts throughout the several views, in which Figure 1 is a fragmentary view of a windowframe, showing my improved lock attached to the same. Fig. 2 is a vertical section through the casing of the lock, showing the same in its relative position tothe window-frame; and Fig. 3 isan edge view of the same.

In the drawings the reference-numeral 1 indicates the window-frame, which is carried by the window-casing 2. Upon the windowframe 1 is secured my improved lock 3., this SerialNo. 115,296. (No model.)

one side flattened, as indicated at 4, said side being in alinement with the window-casing 2. The casing 3 carries flanges 5 and 6, by which it is secured to the window-frame 1.

The reference-numeral 7 indicates an eccentric which is pivoted to the casing, as indicated at 8, said eccentric carrying a handle 9, and opposite said handle is the quadrant 10, carrying a piece of rubber 11. To the lower endof' said quadrant, as indicated at 12, is secured a spring 14, the other end of said spring being secured to the casing, as indicated at 15. The reference-numeral 16 indicates an aperture formed in said casing for the movement and reception of the handle 9, and the reference-numeral 17 indicates a similar aperture formed in the casing for the reception and movement of a handle 18, carried by a bellcrank 19. This bell-crank is pivoted, as indicated at 20, and carries the extending arm 21. To the lower side of the handle 18 is connected the spring 22, which in turn is connected to the casing 3.

The reference-numeral 23 indicates an aperture for the reception and passage of a lug 24, secured to the window-casing by means of the screws 25. This lug carries a shoulder for engagement with the bell-crank and is secured near the bottom of the window-casing and is only used when it is desired to lock the window permanently.

The operation of my improved window-lock is as follows: As the window is lowered the arm 21 of the bell-crank 19 will engage the inclined face of the shoulderorcatch 24, th ereby slightly compressing the spring 22, and after passing the said shoulder thearrn2-1 will be forced inward by the spring 22, thereby preventing the raising of the sash. To raise the-window, the handle 18 is depressed, thereby releasing the arm 21 from the catch 24. After the sash has been raised to the desired position the handle 9 is depressed, thereby forcing the rubber surface of the quadrant against the window-casing and locking the sash against any movement thereof.

While I have shown the most practical embodiment of my invention, it will be obvious that various changes may be made in the delock consisting of an oval easing having its I Ow tails of construction without departing from the general spirit of my invention as claimed. Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

In a device of the class described, the combination with a window-lock comprising a casing to be secured to the window-frame and in alinement with the window-casing',an eccentric pivoted within the casing consisting of a quadrant having a handle formed integral therewith. a spring secured to the lower end of the q uad rant and to the adjacent side of the casing, said eccentric carrying a piece'of rubber or other flexible material upon its quadrant, said eccentric bearing or impinging against the window-casing, and abcll-cranklever pivoted within the casing and carrying a handle extending through the casing, a spring connected to the under side of the'handle and to the lower side of the casing, said lower side of the casing having an aperture formed therein, of a lug secured to the window-casing and adapted to move through the said aperture, said lug having a shoulder adapted for engagement with the said bell-crank lever, substantially as described.

In testimony whereof Iaffix my signature in the presence of two witnesses.

JOHN T. MYERS. 

